About Us

Voltamp Transformers Limited, Vadodara (INDIA) is in the business of design, manufacture, and supplies of transformers since last 61 years, having 70000 installations in the country and overseas.

VOLTAMP’s focus is quality conscious product users in corporate sector and private utility segment and is the largest supplier of energy efficient transformers to PSUs, MNCs and large co-operatives: 95% of listed corporates and MNCs in the country are regular customers of VOLTAMP.

Voltamp has strong presence across all Industry segments like Power, Steel, Cement, Oil & Gas, Chemical and Petrochemical, Data Centres, Green Energy, to name a few.

Large EPC firms like Larsen & Toubro, TECHNIP, Thyssenkrupp, Toyo, Petrofac, Engineers India, Tata Projects, Thermax and multinational engineering giants like SIEMENS, ABB, GE, HITACHI to name few, have been regularly sourcing transformers up to 220 kv voltage class from VOLTAMP, since more than 3 decades.


Voltamp is professionally managed, debt free listed corporate with Institutions holdings of 53% and is rated AA STABLE assigned by CARE Ratings Limited, the highest credit rating in the Indian Transformer Industry.

The Company has achieved annual sales of Rs.1616.22 crores for the FY: 2023-24.


Voltamp is leading manufacturer of energy efficient and (customized) industrial application transformers. Company’s product and services offerings consist of:

Voltamp has four manufacturing facilities in Gujarat: with total Installed Capacity of 14000 MVA as detailed hereunder:

“VOLTAMP” cast resin dry type transformers are manufactured with technology transfer from HTT, Germany in compliance with established international standards and technical features since 1998, enjoying leadership position in Indian market, with 35% market share, with  22,000 installations.

Our facilities are ISO 9001:2015, ISO 14001:2015 and ISO 45001:2018 accredited for Design, Manufacture and After Sales Services.

VOLTAMP’s in-house testing facilities are accredited by the National Accreditation Board (NABL), for testing and calibration laboratories.

About the Promotors

Late Mr. Lalitkumar H. Patel was a promoter of the Company, he initiated a partnership business of manufacturing Transformers in the name of M/s Voltamp Corporation in the year 1963. In 1967, he incorporated Voltamp Transformers Private Limited, which acquired the He completed his graduation from Imperial College of Science and Technology, London and further studied Electrical Engineering with honours from A.C.G. Institute and spent 4 decades in this industry. He initially worked with SIEMENS, Germany at their Nurenberg Transformer Division where he had gained experience in all the aspects of Transformer manufacturing. On his return, he joined Bharat Bijlee Ltd. / Siemens India, then a Licensee of Siemens from 1961 to 1963.